How To Fix M1018 - Enter a valid document item (1-999)

SAP Error Message - Details

• Message type: E = Error

• Message class: M1 - Internal RW Documents

• Message number: 018

• Message text: Enter a valid document item (1-999)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message M1018 - Enter a valid document item (1-999) ?

  The SAP error message M1018, which states "Enter a valid document item (1-999)," typically occurs in the context of material management or inventory transactions. This error indicates that the system expects a valid document item number within the specified range (1-999), but the input provided does not meet this requirement.
  Cause:
  
  Invalid Item Number: The item number entered may be outside the acceptable range (1-999).
  Incorrect Document Type: The document type being processed may not support the item number being entered.
  Data Entry Error: There may have been a typographical error or incorrect input format.
  Missing Document: The document you are trying to reference may not exist or may not have been created properly.
  System Configuration: There may be configuration settings in the SAP system that restrict the range of valid document items.
  
  Solution:
  
  Check Input: Verify that the item number you are entering is within the valid range (1-999). Ensure there are no leading zeros or extra spaces.
  Review Document Type: Ensure that you are using the correct document type that corresponds to the item number you are trying to enter.
  Consult Documentation: Refer to SAP documentation or help files for the specific transaction you are using to understand the expected input.
  Check Document Existence: Ensure that the document you are trying to reference has been created and is available in the system.
  System Configuration: If you suspect a configuration issue, consult with your SAP administrator or technical team to review the settings related to document item numbers.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to material management, such as MIGO (Goods Movement), MB1A (Goods Withdrawal), or MB1B (Transfer Posting).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Permissions: Ensure that you have the necessary permissions to access and modify the document in question.
  Training and Documentation: If you are new to SAP, consider undergoing training or reviewing user manuals to better understand how to navigate and input data correctly.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.